Application: plasma-discover (5.13.5)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.15.0-33-generic x86_64
Distribution: KDE neon Developer Edition

-- Information about the crash:
- What I was doing when the application crashed:

Doing web-development. As a result, I was editing some code with VSCode, browsing the internet Firefox 62 and, Chromium was open for testing a webpage being developed. Desktop clients for Slack and Telegram were also running in the background, as well as Dropbox and Redshift-GTK. Nothing else (that was directly visible to me as a user).

(Running KDE Neon, so I guess that makes it an Ubuntu derivative?)

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcf9b927900 (LWP 12343))]

Thread 8 (Thread 0x7fcf57d96700 (LWP 12352)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007fcf975edfa4 in QtLinuxFutex::_q_futex (val3=0, addr2=0x0, val2=0, val=<optimized out>, op=0, addr=<optimized out>) at thread/qfutex_p.h:92
#2  QtLinuxFutex::futexWait<QBasicAtomicInteger<unsigned int> > (expectedValue=<optimized out>, futex=...) at thread/qfutex_p.h:107
#3  futexSemaphoreTryAcquire_loop<false> (timeout=-1, nn=8589934593, curValue=<optimized out>, u=...) at thread/qsemaphore.cpp:221
#4  futexSemaphoreTryAcquire<false> (timeout=-1, n=1, u=...) at thread/qsemaphore.cpp:264
#5  QSemaphore::acquire (this=this@entry=0x7fcf57d94100, n=n@entry=1) at thread/qsemaphore.cpp:328
#6  0x00007fcf977e91b6 in QMetaObject::activate (sender=0x2dc4610, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3739
#7  0x00007fcf94abf378 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007fcf94b60d3d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#9  0x00007fcf977e8f79 in QMetaObject::activate (sender=0x7fcf50002860, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3771
#10 0x00007fcf94ab4c02 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007fcf94ab54cd in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007fcf977e8f79 in QMetaObject::activate (sender=0x7fcf50002f00, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3771
#13 0x00007fcf94b5ad77 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007fcf94b570db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007fcf94b57ac6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#16 0x00007fcf94b3a8d1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#17 0x00007fcf977e8f79 in QMetaObject::activate (sender=0x7fcf500042d0, signalOffset=<optimized out>, local_signal_index=<optimized out>, argv=<optimized out>) at kernel/qobject.cpp:3771
#18 0x00007fcf94b05973 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#19 0x00007fcf94b05a2c in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#20 0x00007fcf94b19371 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007fcf98e1639c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x7fcf50005730, e=0x7fcf57d95a90) at kernel/qapplication.cpp:3727
#22 0x00007fcf98e1dab0 in QApplication::notify (this=0x7ffeba9e17d0, receiver=0x7fcf50005730, e=0x7fcf57d95a90) at kernel/qapplication.cpp:3486
#23 0x00007fcf977bc228 in QCoreApplication::notifyInternal2 (receiver=0x7fcf50005730, event=event@entry=0x7fcf57d95a90) at kernel/qcoreapplication.cpp:1048
#24 0x00007fcf97813d1d in QCoreApplication::sendEvent (event=0x7fcf57d95a90, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#25 socketNotifierSourceDispatch (source=0x7fcf500013a0) at kernel/qeventdispatcher_glib.cpp:106
#26 0x00007fcf91757197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007fcf917573f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007fcf978130bb in QEventDispatcherGlib::processEvents (this=0x7fcf500008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#30 0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7fcf57d95cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#31 0x00007fcf975ef5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#32 0x00007fcf975fa727 in QThreadPrivate::start (arg=0x2dc1ce0) at thread/qthread_unix.cpp:367
#33 0x00007fcf9368c6ba in start_thread (arg=0x7fcf57d96700) at pthread_create.c:333
#34 0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 7 (Thread 0x7fcf65cb7700 (LWP 12350)):
#0  0x00007fcf96be874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcf9175738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcf978130bb in QEventDispatcherGlib::processEvents (this=0x7fcf5c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7fcf65cb6cb0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fcf975ef5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fcf975fa727 in QThreadPrivate::start (arg=0x205eeb0) at thread/qthread_unix.cpp:367
#7  0x00007fcf9368c6ba in start_thread (arg=0x7fcf65cb7700) at pthread_create.c:333
#8  0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 6 (Thread 0x7fcf664b8700 (LWP 12349)):
#0  0x00007fcf96be427d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcf905f3073 in ?? () from /usr/lib/nvidia-384/tls/libnvidia-tls.so.384.130
#2  0x00007fcf9179a6f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcf91756e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcf91757330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fcf91757712 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fcf680ab9d6 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#7  0x00007fcf9177dbb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fcf9368c6ba in start_thread (arg=0x7fcf664b8700) at pthread_create.c:333
#9  0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 5 (Thread 0x7fcf66cb9700 (LWP 12348)):
#0  0x00007fcf96be874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcf9175738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcf917574d9 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fcf9177dbb5 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fcf9368c6ba in start_thread (arg=0x7fcf66cb9700) at pthread_create.c:333
#6  0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 4 (Thread 0x7fcf74ef7700 (LWP 12347)):
#0  __GI___clock_gettime (clock_id=clock_id@entry=1, tp=tp@entry=0x7fcf74ef69a0) at ../sysdeps/unix/clock_gettime.c:93
#1  0x00007fcf978129d1 in qt_clock_gettime (ts=0x7fcf74ef69a0, clock=<optimized out>) at kernel/qelapsedtimer_unix.cpp:111
#2  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at kernel/qelapsedtimer_unix.cpp:166
#3  qt_gettime () at kernel/qelapsedtimer_unix.cpp:175
#4  0x00007fcf978111c9 in QTimerInfoList::updateCurrentTime (this=this@entry=0x7fcf6c002ed0) at kernel/qtimerinfo_unix.cpp:91
#5  0x00007fcf97811735 in QTimerInfoList::timerWait (this=0x7fcf6c002ed0, tm=...) at kernel/qtimerinfo_unix.cpp:388
#6  0x00007fcf97812e3e in timerSourcePrepareHelper (timeout=0x7fcf74ef6a74, src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:132
#7  timerSourcePrepare (source=<optimized out>, timeout=0x7fcf74ef6a74) at kernel/qeventdispatcher_glib.cpp:165
#8  0x00007fcf9175691d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fcf917572bb in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fcf978130bb in QEventDispatcherGlib::processEvents (this=0x7fcf6c0008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7fcf74ef6c40, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#13 0x00007fcf975ef5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#14 0x00007fcf9aa3ff86 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#15 0x00007fcf975fa727 in QThreadPrivate::start (arg=0x1f84330) at thread/qthread_unix.cpp:367
#16 0x00007fcf9368c6ba in start_thread (arg=0x7fcf74ef7700) at pthread_create.c:333
#17 0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7fcf7edee700 (LWP 12346)):
#0  0x00007fcf96be874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcf9175738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcf978130bb in QEventDispatcherGlib::processEvents (this=0x7fcf700008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7fcf7ededc90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fcf975ef5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fcf9817a195 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#7  0x00007fcf975fa727 in QThreadPrivate::start (arg=0x1583080) at thread/qthread_unix.cpp:367
#8  0x00007fcf9368c6ba in start_thread (arg=0x7fcf7edee700) at pthread_create.c:333
#9  0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7fcf7ffff700 (LWP 12345)):
#0  0x00007fcf96be874d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fcf9175738c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fcf978130bb in QEventDispatcherGlib::processEvents (this=0x7fcf780008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7fcf7fffec80, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#5  0x00007fcf975ef5e4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:525
#6  0x00007fcf99535f35 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fcf975fa727 in QThreadPrivate::start (arg=0x7fcf997aed60) at thread/qthread_unix.cpp:367
#8  0x00007fcf9368c6ba in start_thread (arg=0x7fcf7ffff700) at pthread_create.c:333
#9  0x00007fcf96bf441d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fcf9b927900 (LWP 12343)):
[KCrash Handler]
#6  0x00007fcf96b22428 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
#7  0x00007fcf96b2402a in __GI_abort () at abort.c:89
#8  0x00007fcf96b647ea in __libc_message (do_abort=2, fmt=fmt@entry=0x7fcf96c7ded8 "*** Error in `%s': %s: 0x%s ***\n") at ../sysdeps/posix/libc_fatal.c:175
#9  0x00007fcf96b6b9dc in malloc_printerr (ar_ptr=0x7fcf96eb1b20 <main_arena>, ptr=0x2db5340, str=0x7fcf96c7ac75 "corrupted size vs. prev_size", action=<optimized out>) at malloc.c:5006
#10 malloc_consolidate (av=av@entry=0x7fcf96eb1b20 <main_arena>) at malloc.c:4183
#11 0x00007fcf96b6ecde in _int_malloc (av=av@entry=0x7fcf96eb1b20 <main_arena>, bytes=bytes@entry=4096) at malloc.c:3450
#12 0x00007fcf96b71184 in __GI___libc_malloc (bytes=bytes@entry=4096) at malloc.c:2913
#13 0x00007fcf96b3289f in __realpath (name=0x2dbef88 "/etc/xdg/ksysguard.knsrc", resolved=resolved@entry=0x0) at canonicalize.c:78
#14 0x00007fcf9775ad7e in realpath (__resolved=0x0, __name=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/stdlib.h:48
#15 QFileSystemEngine::canonicalName (entry=..., data=...) at io/qfilesystemengine_unix.cpp:760
#16 0x00007fcf976f0ba8 in QFileInfoPrivate::getFileName (name=QAbstractFileEngine::CanonicalName, this=0x2db63b0) at io/qfileinfo.cpp:59
#17 QFileInfo::canonicalFilePath (this=this@entry=0x7ffeba9e0b50) at io/qfileinfo.cpp:567
#18 0x00007fcf997c86c0 in KConfigPrivate::changeFileName (this=this@entry=0x2d83ca0, name=...) at /workspace/build/src/core/kconfig.cpp:606
#19 0x00007fcf997c9ef1 in KConfig::KConfig (this=0x7ffeba9e0c90, file=..., mode=..., resourceType=QStandardPaths::GenericConfigLocation) at /workspace/build/src/core/kconfig.cpp:260
#20 0x00007fcf64c1a6bc in KNSBackend::KNSBackend (this=0x2dc7c90, parent=<optimized out>, iconName=..., knsrc=...) at /workspace/build/libdiscover/backends/KNSBackend/KNSBackend.cpp:99
#21 0x00007fcf64c1e1ce in KNSBackendFactory::newInstance (this=this@entry=0x2d7a890, parent=0x15fa860) at /workspace/build/libdiscover/backends/KNSBackend/KNSBackend.cpp:73
#22 0x00007fcf9a6e0030 in DiscoverBackendsFactory::backendForFile (this=this@entry=0x7ffeba9e10bf, libname=..., name=...) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:65
#23 0x00007fcf9a6e06b2 in DiscoverBackendsFactory::backend (this=this@entry=0x7ffeba9e10bf, name=...) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:51
#24 0x00007fcf9a6e0b16 in DiscoverBackendsFactory::<lambda(const QString&)>::operator() (name=..., __closure=<synthetic pointer>) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:99
#25 kTransform<QVector<AbstractResourcesBackend*>, QStringList, DiscoverBackendsFactory::allBackends() const::<lambda(const QString&)> > (op=..., input=...) at /workspace/build/libdiscover/utils.h:48
#26 DiscoverBackendsFactory::allBackends (this=this@entry=0x7ffeba9e10bf) at /workspace/build/libdiscover/DiscoverBackendsFactory.cpp:99
#27 0x00007fcf9a6cad07 in ResourcesModel::registerAllBackends (this=0x15fa860) at /workspace/build/libdiscover/resources/ResourcesModel.cpp:208
#28 0x00007fcf9a6ef635 in ResourcesModel::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /workspace/build/obj-x86_64-linux-gnu/libdiscover/moc_ResourcesModel.cpp:291
#29 0x00007fcf977e9fb9 in QObject::event (this=0x15fa860, e=<optimized out>) at kernel/qobject.cpp:1251
#30 0x00007fcf98e1639c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x15fa860, e=0x15fac50) at kernel/qapplication.cpp:3727
#31 0x00007fcf98e1dab0 in QApplication::notify (this=0x7ffeba9e17d0, receiver=0x15fa860, e=0x15fac50) at kernel/qapplication.cpp:3486
#32 0x00007fcf977bc228 in QCoreApplication::notifyInternal2 (receiver=0x15fa860, event=event@entry=0x15fac50) at kernel/qcoreapplication.cpp:1048
#33 0x00007fcf977bee2e in QCoreApplication::sendEvent (event=0x15fac50, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#34 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x14b3790) at kernel/qcoreapplication.cpp:1745
#35 0x00007fcf977bf2a8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1599
#36 0x00007fcf97813a93 in postEventSourceDispatch (s=0x1524a90) at kernel/qeventdispatcher_glib.cpp:276
#37 0x00007fcf91757197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#38 0x00007fcf917573f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007fcf9175749c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007fcf9781309f in QEventDispatcherGlib::processEvents (this=this@entry=0x1526780, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#41 0x00007fcf8b0689a1 in QPAEventDispatcherGlib::processEvents (this=0x1526780, flags=...) at qeventdispatcher_glib.cpp:69
#42 0x00007fcf977ba5ba in QEventLoop::exec (this=this@entry=0x7ffeba9e16f0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:214
#43 0x00007fcf977c36c4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1336
#44 0x00007fcf98601f8c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1762
#45 0x00007fcf98e162f5 in QApplication::exec () at kernel/qapplication.cpp:2901
#46 0x00000000004131ff in main (argc=1, argv=<optimized out>) at /workspace/build/discover/main.cpp:156

The reporter indicates this bug may be a duplicate of or related to bug 398463, bug 398461.

Possible duplicates by query: bug 398463, bug 398461, bug 398398, bug 398373, bug 394640.

Reported using DrKonqi